Driving mechanism for power meat choppers



June 25, 1929. J, w, BROWN, JR 1,718,893

DRIVING MECHANISM FOR POWER MEAT CHOPPERS Filed Aug. 1, 1923 2Sheets-Sheet l JOZn/ June 25, 1929. w, BROWN, JR 1,718,893

DRIVI ING MECHANISM FOR POWER MEAT CHOPPERS Filed Aug. 1, 1923 2Sheets-Sheet 2 Patented June 25, 19 29.

' UNITED STATES 1,718,893 PATENT OFFICE.

JOHN WILSON BROWN, JR OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEENTERPRISE MANUFACTURING COMPANY OF PENNSYLVANIA, OF PHILADELPHIA,

( PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DRIVING MECHANISM FOR POWER MEAT CHOPPERS.

Application filed August 1, 1923. Serial No. 655,084.

My invention relates to certain improvements in meat choppers of thetype in which a screw feeds the material towards a perforated plate anda knife cuts the n'iaterial projected into the openings of the plate.

()ne object of the inventionis to provide a power driven means foroperating the mecha- IllSlIl. v

A further object of the invention is to design the driving mechanism sothat it can be driven at two speeds.

In the accompanying drawings:

Fig. 1 is a longitudinal sectional View of a power meat chopperillustrating my invention;

Fig. 2 is a sectional view on the line 22, Fig. 1; and b Fig. 3 is aperspective view of the shifting Referring to the drawings, 1 is theframe mounted on a standard 2, made as an integral part of the frame. 3is a driving shaft mounted in bearings 4 and 5 in the frame. Thesebearings, in the present instance, are shown as roller bearings. Securedto the shaft 3 is a pulley 6 and loosely mounted on the shaft is apulley 7. Suitable shifting mechanism is provided forshifting thedriving belt from one pulley to the other. Keyed on the shaft 3 is apinion 8 having an extended hub 9 on which is secured a pinion 10,greater in diameter than the pinion 8.

11 designates a driven shaft mounted in bearings 12 and 13. Secured tothe shaft 11 by a key 16 are two gear wheels 14 and 15. The gear wheel14 is greater in diameter than the gear wheel l5and meshes with thesmall pinion 8 when the pinion is shifted to the position shown inFig. 1. The gear wheel 15 meshes with the large pinion 10 when thepinion 10 is shifted in line with said gear wheel.

By this arrangement, the shaft 11 can be driven at two speeds. Locatedbetween the bearing 13 and the gear wheel 15 is a thrust bearing 17having a series of internal, annular ribs 18. Secured to theshaft is asleeve 19 having annular ribs that extend into the space between theribs 18, as clearly shown in Sn the end of the shaft 11 is ahead 31 andlocated betweenthe head and the sleeve 19 ofthe thrust bearing is asleeve 37. This sleeve transmits the thrust on the head of the shaft tothe thrust hearing. The thrust bearin 17 is located between the bearing13 and theliub of the gear wheel 15. The thrust hearing has a flange 38at its forward end, which rests against the shoulder of the frame.

Secured to the frame 1 by bolts 21 is a casing 22 of the shapeillustrated in Fig. l and having longitudinal, internal ribs 23 and ahopper 24.

25 designates a feed screw located in the casing. This feed screwextends through an opening 26 in the inner end of the casing and has itsouter bearing in a perforated plate 27. On the feed screw is a knife 28,which cuts against the inner surface of the plate 27. A screw-threadedring 29 retains the plate in position in the casing.

111 the inner end of the screw 25 is a rectangular socket 30, which isarranged to receive the rectangular head 31 that extends into the socketand forms a coupling between the driven shaft 11 and the screw 25.

It will be noticed that the lateral bearing 13 for the shaft is locatedbetween the thrust bearing 17 and the coupling connecting the shaft withthe screw 25 of the meat chopper. This coupling is a comparatively neatfit so that the lateral bearing 13 forms the rear bearing for the screw,the front bearing of the screw being in the perforated plate, as clearlyshown in the drawings.

Pivoted to the frame 1, above the bearing 13, is a plate 32, whichcloses the space between the frame and the casing 22. A cap 33 ismounted on the frame 1 and encloses the upper portions of the gearwheels 14 and 15. I In order to provide a simple and effective means forshifting the pinions 8 and 10, a shiftin bar 34 is provided, whichextends throng openings in the frame 1. This bar has a portion 35,rectangular in shape, which is notched at 36 to receive the pinion 10,as shown in Fig. 2, so that, when the bar is moved longitudinally, thetwo pinions can be shifted in order that the pinion 8 will mesh with thegear wheel 14, while the pinion 10 will run clear of its gear wheel.Vhen the bar is shifted so that the pinion 10 will mesh with its gear15, the pinion 8 will run clear of the gear wheel 14.

I claim:

The combination in driving mechanism for meat choppers, of a frame; ashaft mounted in the frame; roller bearings at the forward the forwardroller bearing;

the easing engaged by the shaft, the forward roller bearing forming therear bearing for 1 the feed screw, the parts being so constructed thatwhen the casing is removed from the frame the forward roller bearing andthe thrust hearing can be detached from the casi ug.

JOHN \VILSON BROVN, .TR.

